Best commerce/store plugin?

I’ve used Drupal for a number of years, but am fairly new to WordPress. I’ve got a client asking me to develop them a fairly simple e-store in WP, and I’m wondering which free plugin other developers would recommend.

The ones I’m looking at are Jigoshop, WooCommerce, WP e-Commerce, and eShop. I’ve seen a number of posts extolling the virtues of each, but little comparison between them.

Anyone have any experience and preferences with these?

The site is intended to center around the products offered – a few static info pages, then a large product listing. Products need to be searchable/sortable based on several categories/tags, with shopping cart and inventory support.